function to go thru every single values in a json object

traverse.js

function traverse() {

  var prop, addr, value,
      doc    = arguments['0'],
      parent = arguments['1'],
      func   = arguments['2'];

  if (typeof parent === "function") {
    func = parent;
    parent = undefined;
  }

  parent = parent ? parent + '_' : '';

  for (prop in doc) {

    if (!doc.hasOwnProperty(prop)) { continue; }

    addr  = parent + prop;
    value = doc[prop];

    if (typeof value === "object") {
      traverse(value, addr, func);
    } else {
      func(addr.split('_'), value);
    }

  }

}